---
title: ML Engines in Mongo
sidebarTitle: db.ml_engines
---

To create a model, you need an underlying ML engine, such as Lightwood or OpenAI. MindsDB uses the Lightwood engine by default if none other is provided. You can check the available ML engines in the **ML Engines** section.

## The `db.ml_engines.insertOne` Method

### Description

This method creates an ML engine based on one of the available ML handlers.

### Syntax

Here is the syntax:

```sql
db.ml_engines.insertOne(
    {
        "name": "ml_engine_name",
        "handler": "handler_name",
        "params": {
            "key": "value"
            }
    }
)
```

On execution, we get:

```sql
{
  acknowledged: true,
  insertedId: ObjectId("6465e96766d152ae1e247802")
}
```

### Example

Let's create an OpenAI engine that uses the OpenAI handler.

```sql
db.ml_engines.insertOne(
    {
        "name": "openai_engine",
        "handler": "openai",
        "params": {
            "openai_api_key": "qqq"
            }
    }
)
```

On execution, we get:

```sql
{
  acknowledged: true,
  insertedId: ObjectId("6465e9d566d152ae1e247803")
}
```

## The `db.ml_engines.find` Method

### Description

This method lists all the available ML engines.

### Syntax

Here is the syntax:

```sql
db.ml_engines.find()
```

On execution, we get:

```sql
{
  NAME: 'lightwood',
  HANDLER: 'lightwood',
  CONNECTION_DATA: {
    key: [
      'password'
    ],
    value: [
      ''
    ]
  }
}
{
  NAME: 'openai',
  HANDLER: 'openai',
  CONNECTION_DATA: {
    key: [
      'password'
    ],
    value: [
      ''
    ]
  }
}
...
```

## The `db.ml_engines.deleteOne` Method

### Description

This method deletes an ML engine.

### Syntax

Here is the syntax:

```sql
db.ml_engines.deleteOne({"name": "ml_engine_name"})
```

On execution, we get:

```sql
{
  acknowledged: true,
  deletedCount: 1
}
```

### Example

Let's delete an OpenAI engine created earlier.

```sql
db.ml_engines.deleteOne({"name": "openai_engine"})
```

On execution, we get:

```sql
{
  acknowledged: true,
  deletedCount: 1
}
```

<Tip>
Check out [how to build an ML handler](/contribute/ml-handlers).

To learn more about ML engines, visit the **ML Engines** section.
</Tip>
